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Besides, another complementary GPS\/INS system is set up on the moving platforms with communication to the unmanned helicopter so that the controlled UAV is able to follow the dynamic platforms with good tracking performance. The whole system has been successfully implemented, and with its superb performance the Unmanned Systems Research Group from the National University of Singapore won the first place in the final round of the rotary-wing category competition of the 2nd AVIC Cup \u2014 International UAV Innovation Grand Prix 2013. <\/jats:p>","DOI":"10.1142\/s2301385015500053","type":"journal-article","created":{"date-parts":[[2015,1,29]],"date-time":"2015-01-29T23:34:47Z","timestamp":1422574487000},"page":"63-87","source":"Crossref","is-referenced-by-count":15,"title":["Development of an Unmanned Helicopter for Vertical Replenishment"],"prefix":"10.1142","volume":"03","author":[{"given":"Fei","family":"Wang","sequence":"first","affiliation":[{"name":"Unmanned Systems Research Group, National University of Singapore, E4A-03-04, 3 Engineering Drive 3, Singapore 117582, 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